<template>
  <div class="search-container">
    <!-- 搜索栏 -->
    <!--
      Tips: 在 van-search 外层增加 form 标签，且 action 不为空，即可在 iOS 输入法中显示搜索按钮
     -->
    <form action="/" class="search-form">
      <van-search
        v-model="searchText"
        show-action
        placeholder="请输入搜索关键词"
        background="#3296fa"
        @search="onSearch"
        @cancel="onCancel"
        @focus="isResultShow = false"
      />
    </form>
    <!-- /搜索栏 -->

    <!-- 搜索结果 -->
    <search-result v-if="isResultShow" :search-text="searchText" />
    <!-- /搜索结果 -->

    <!-- 联想建议 -->
    <search-suggestion
      v-else-if="searchText"
      :search-text="searchText"
      @search="onSearch"
    />
    <!-- /联想建议 -->

    <!-- 搜索历史记录 -->
    <search-history
      v-else
      :searchHistories="searchHistories"
      @update-history-all="searchHistories = []"
      @search="onSearch"
    />
    <!-- /搜索历史记录 -->
  </div>
</template>

<script>
import SearchHistory from './components/search-history';
import SearchSuggestion from './components/search-suggestion';
import SearchResult from './components/search-result';
import { setItem, getItem } from '@/utils/storage';

export default {
  name: 'SearchIndex',
  components: {
    SearchHistory,
    SearchSuggestion,
    SearchResult
  },
  props: {},
  data () {
    return {
      searchText: '',
      isResultShow: false,
      searchHistories: getItem('history') || []
    };
  },
  computed: {},
  watch: {
    searchHistories (v) {
      console.log('hha');
      setItem('history', v);
    }
  },
  created () {},
  mounted () {},
  methods: {
    onSearch (val) {
      this.searchText = val;

      const index = this.searchHistories.indexOf(val);
      if (index !== -1) {
        this.searchHistories.splice(index, 1);
      }

      this.searchHistories.unshift(val);
      this.isResultShow = true;
    },
    onCancel () {
      this.$router.back();
    }
    // deleteHistory(v) {
    //   this.searchHistories = v;
    // },
  }
};
</script>

<style scoped lang="less">
.search-container {
  padding-top: 108px;
  .van-search__action {
    color: #fff;
  }
  .search-form {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1;
  }
}
</style>
